title: Tryptophan protection of phage from ultraviolet irradiation.
mesh_terms: D001412:Bacillus subtilis / Q000187:drug effects / Q000528:radiation effects*; D001435:Bacteriophages / Q000187:drug effects / Q000528:radiation effects*; D014364:Tryptophan / Q000494:pharmacology*; D014466:Ultraviolet Rays
chemical_list: D014364:Tryptophan